A Semi-Atomistic Model for Flaw-Induced Fracture in Non-Ductile Materials.

Abstract

A semi-atomistic model is proposed for the non-ductile failure of materials based upon an analysis of static and dynamic stress concentrations in uniaxial fiber matrix composite materials. In this model the finite spacing of bonds is accounted for in the direction of a crack or flaw, while the material is considered as continuous in the perpendicular direction. An elementary, two dimensional analysis based on linear force displacement laws shows, that the stress concentration is dependent only upon the digital quantity of the number of adjacent, broken filaments or bonds, and is independent of the spacing and of the relative elastic properties of the fiber and matrix.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1966
Accession Number
ADA307228

Entities

People

  • H. Schuerch

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Crack Propagation
  • Crack Tips
  • Elastic Waves
  • Equations
  • Failure Mode And Effect Analysis
  • Fibers
  • Graphitic Materials
  • Material Degradation Processes
  • Materials
  • Mechanics
  • Square Roots
  • Stress Concentration
  • Stress Corrosion
  • Tensile Strength
  • Transitions
  • Two Dimensional

Readers

  • Linear Algebra
  • Mechanical Engineering/Mechanics of Materials.
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Space